The amount of money that Youtubers make doesn't really depend on the subscribers but it more depends on the amount of views your videos get on youtube.
The more youtube video views you have the more chance you have of the advertisements on your videos being seen or clicked on.
The more Ad views on your youtube videos the more money you make.
But the average Youtuber that has 1 million subscribers makes between $3,000.00 to $6,000.00 per month from the ads on their videos and is paid through Adsense.